“Stock split ”指的是股票分割，又称股票拆细，即将一张较大面值的股票拆成几张较小面值的股票。　股票分割对公司的资本结构不会产生任何影响，一般只会使发行在外的股票总数增加，资产负债表中股东权益各账户（股本、资本公积、留存收益）的余额都保持不变，股东权益的总额也保持不变。A stock split is a corporate action in which a company divides its existing shares into multiple shares. Basically, companies choose to split their shares so they can lower the trading price of their stock to a range deemed comfortable by most investors and increase the liquidity of the shares。

比如说， 陈小姐拥有1,000股波音公司(BA)的股票，当公司宣布2:1股票分割后，陈小姐原有的1,000股股票便会变为2,000股。1,000 x (2/1) = 2,000

如果1股股票原先价钱是$40元，那么分割后的价钱便为:$40 x (1/2) = $20

基本上股票的总价值还是一样的。在股票未分割前它的价值是$40,000元 (1,000股 x $40元)。分割后它的总价值还是$40,000元 (2,000股 x $20元)。

“reverse stock split ”指的是将公司已发行的股份数量缩小至少量股份，而股东所持股份的比例不变，亦不会对股东造成损失。这不如股票分割常见，通常只在股价较低时出现。这一行动会抬高股票的名义价格，但不会影响股票的价值，因为每一缩小数量的股份却代表对公司更多的所有权，也称“逆股票分割”，等于stock consolidation并股。A reverse stock split divides the existing total quantity of shares by a number such as five or ten, which would then be called a 1-for-5 or 1-for-10 reverse split, respectively. A reverse stock split is also known as a stock consolidation, stock merge, or share rollback and is the opposite exercise of a stock split, where a share is divided (split) into multiple parts.

比如说， 陈小姐拥有1,000股波音公司(BA)的股票，当公司宣布1:2股票分割后，陈小姐原陈小姐原有的1,000股股票便会变为500股。1,000 x (1/2) = 500

如果1股股票原先价钱是$40元，那么分割后的价钱便为:$40 x (2/1) = $80

基本上股票的总价值也一样的。

以下为相关双语示例：

The Chairman pointed out the 10 for 1 stock split took place as early as 2 November 2009 which was more than twenty days before the first trading day of Asian Citrus shares in the HK Exchange. 主席指出，亚洲果业的股份早在其于联交所上市首个交易日前20多天的2009年11月2 日已一拆十。

In the event the Company conducts a share split or reverse share split after the allotment date, the exercise price shall be adjusted by the following formula, where a fraction of less than one yen resulting from the adjustment shall be rounded up.

配发日后，如果本公司进行股票分割或股票合并，则根据以下公式调整行使价额，调整的结果，不满1日元的零头进位上去。